Ellen Backus

Ellen Backus obtained her PhD in 2005 at Leiden University in the Netherlands. After a PostDoc at the University of Zurich, she moved back to the Netherlands for an independent PostDoc position at AMOLF in Amsterdam. In 2012, she joined the Molecular Spectroscopy department at the Max Planck Institute for Polymer Research as a group leader. Since 2018 she is professor for physical chemistry at the University of Vienna.

Clara Saak

Clara M. Saak studied chemistry at ETH Zürich and later obtained her PhD in Molecular and Condensed Matter Physics at the University of Uppsala. Her PhD Thesis focused on understanding the structure of aqueous surfaces in an environmental context. To continue this line of research she joined the group in 2020 as a PostDoc and obtained a three-year fellowship in 2021 (Marie-Curie CoFund – REWIRE (https://rewire.univie.ac.at/)). Clara is currently working on cooperative surface structures and photochemistry at water surfaces using sum frequency generation spectroscopy.

Tobias Dickbreder

Tobias Dickbreder is a postdoctoral researcher focusing on molecular structure and interactions at mineral-water interfaces. He studied chemistry at Bielefeld University (Germany), where he also performed his PhD studies in physical chemistry. In his PhD research, Tobias investigated the interactions between water and the environmentally relevant minerals calcite and K-feldspar in ultrahigh-vacuum model systems with atomic force microscopy and temperature programmed desorption. To continue this research and gain further insights into mineral-water interactions, he joined our group as a postdoctoral researcher in 2024. In 2025, Tobias was awarded an FWF ESPRIT grant for his research project “Water Organization and DYnamics on K-Feldspar (WODYF)”, which aims to unravel the structure of water and ice at the interface between K-feldspar minerals and aqueous solutions with sum frequency generation spectroscopy.

Sofie Mika

Sofie Mika is a PhD student in our group. She completed her bachelor’s degree in 2019 at the Friedrich-Alexander-University Erlangen-Nurnberg (Germany) in the field of physical chemistry. Subsequently, she started her master studies at the University of Vienna and accomplished her master’s thesis in our group. In January 2022 she started her doctorate where she is constructing a 2D-infrared spectrometer to investigate the dynamics of water in contact with clay.

Veronika Wank

At the end of 2019, Veronika Wank started her PhD in our group. Before, she stayed abroad at the Max Planck Institute for Polymer Research in Mainz and gained extensive experience with spectroscopic, surface-sensitive methods. She completed her bachelor's degree in process engineering and biotechnology at HFU Furtwangen in Germany. For her Master, she focused more on environmental engineering and afterwards joined Ellen Backus' research group at the University of Vienna. This allowed her to continue her research in the environmental field, especially in atmospheric chemistry. She currently investigates the behaviour of atmospherically relevant acids at the air-water interface with the help of sum frequency generation spectroscopy.

Moritz Zelenka

Moritz Zelenka studied chemistry at the University of Vienna, where he obtained both his bachelor’s and master’s degree. In 2021 he started his PhD studies in our group, where he focuses on investigating molecular structure and dynamics at solid-liquid interfaces, especially photocatalyst-water systems. He is a part of an FWF project with the name SFB TACO (https://sfb-taco.at/consortium/p11/).

Lukas Bogner

Lukas Bogner has been working as a doctoral student in our research group since 2024 and previously completed his bachelor's and master's degree in chemistry at the University of Vienna. His research focus now lays in the area of time-resolved spectroscopy. With the help of pump-probe spectroscopy, photo-induced reactions can be monitored on the femto- to picosecond timescale and the excited states of individual species can be examined.

Manuel Hofmann

Manuel Hofmann completed his bachelor's and master's degree in chemistry at the University of Vienna. In 2023 he joined our group for his master thesis, in which he investigated the application of Raman spectroscopy for the quantification of nerve tissue. In 2024 he then started his PhD studies in our group. He is currently investigating the structure and dynamics of small organic acids at the water-air interface using sum frequency generation spectroscopy.